The World Health Organization has raised its pandemic swine flu alert level to phase 5 -- its second-highest level.
The move by the agency, which is the public health arm of the United Nations, is "a strong signal that a pandemic is imminent," according to published guidelines.
"The change to a higher phase of alert is a signal to governments [and industry] that certain actions now should be undertaken with increased urgency and at an accelerated pace," said Dr. Margaret Chan, WHO's...Full Story